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heat limit switch?

06-26-2013, 02:37 PM

is there a low cost heat limit switch for liquid? with normally closed contacts, so when it gets to the heat setting it opens up th electrical contact breaking the circuit,? want to to make a poors man Murphy type Gage on the old generator, so if it start to over heat it will close the fuel solenoid valve shutting down the generator,

I am thinking about 200 for limit, adjustablele may be better.

the idiot light over heat switch grounds out when hot and will not work easly,

Push sticks/blocks Save Fingers
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"The true measure of a man is how he treats someone who can do him absolutely no good."
attributed to Samuel Johnson
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PUBLIC NOTICE: Due to recent budget cuts, the rising cost of electricity, gas, and oil...plus the current state of the economy............the light at the end of the tunnel, has been turned off.

Push sticks/blocks Save Fingers
~~~~~~~~~~~~~~~~~~~
"The true measure of a man is how he treats someone who can do him absolutely no good."
attributed to Samuel Johnson
~~~~~~~~~~~~~~~~~~~
PUBLIC NOTICE: Due to recent budget cuts, the rising cost of electricity, gas, and oil...plus the current state of the economy............the light at the end of the tunnel, has been turned off.

Comment

what I have come up with for the time being or to try, is old hot water thermostat. I taped it to the out hose near the water pump, and wired in the fuel solenoid circuit,, and to increase it range a touch I nipped off the pointer and turned it past a little, I just did a test (generator was low on water a little thus ran a little hotter than normal)l, and the gage was just going out of normal range and I turned it down until it clicked off and then back up approximately 15 degrees, which the head temp would be about 200 when it limits off,

this is a old Chrysler industrial flat head, and very low or no pressure radiator cap, so at our altitude that is boiling or very near it,

Push sticks/blocks Save Fingers
~~~~~~~~~~~~~~~~~~~
"The true measure of a man is how he treats someone who can do him absolutely no good."
attributed to Samuel Johnson
~~~~~~~~~~~~~~~~~~~
PUBLIC NOTICE: Due to recent budget cuts, the rising cost of electricity, gas, and oil...plus the current state of the economy............the light at the end of the tunnel, has been turned off.

Comment

I used the lower element thermostat, but yes, it is similar to that, since I had this all ready, the cost was right, if I would bought some thing I would have bought some more impressive, more like you were suggestion,

Push sticks/blocks Save Fingers
~~~~~~~~~~~~~~~~~~~
"The true measure of a man is how he treats someone who can do him absolutely no good."
attributed to Samuel Johnson
~~~~~~~~~~~~~~~~~~~
PUBLIC NOTICE: Due to recent budget cuts, the rising cost of electricity, gas, and oil...plus the current state of the economy............the light at the end of the tunnel, has been turned off.